They kept the door locked for a long time.

　　Dont leave the windows broken like this all the time.

　　2.过去分词用在使役动词have,get,make 的后面。

　　(1)注意"have/get+宾语+过去分词"的两种用法:

　　①表示让某人做某事,如:

　　I have had/got my bike repaired.

　　He had/got many trees planted just then.

　　②表示"遭遇到某种不幸;受到打击"等。如:

　　My elder sister had her wallet stolen on a bus last month.

　　The old man had his wrist broken in the accident.

　　(2)make+宾语+过去分词,在这种结构中,过去分词的动词必须是表示结果含义的,如:

　　I raised my voice to make myself heard.

　　They managed to make themselves understood using very simple English.

　　3.过去分词用在感官动词watch,see,hear,listen to,feel等之后。

　　When we got to school,we saw the door locked.

　　We can hear the windows beaten by the heavy rain drops.

　　4.过去分词用在"with+宾语+宾语补足语"这一结构中,过去分词与宾语之间是动宾关系。

　　The thief was brought in with his hands tied behind his back.

　　With many brightly-colored flowers planted around the building,his house looks like a beautiful garden.

　　Step 3:新知初探

1.I had my hair 　　　(cut) yesterday.